Flexible shaft-coupling.



No. 731,813. PATENTBD JUNE 23, 1903. A PETELER FLEXIBLE SHAFT COUPLING.

APPLIGATION FILED FEB. 2v, 1902.

No MODEL To a/ZZ whom it may con/cern:

Patented .Tune 23, 1903.

FFICE.

4ADOLPH PETELER, or LOUIS, MISSOURI.

FLEXIBLE sHAFT-cOUPLlNG.

SPECIFICATION fbrming part of Letters PatentNo. 731,813, dated June 23, 1903. l Application filed February 27, 1902. Serial Nn. 95,981. (No model.)

Be it known that LADOLPH PETELER, a citizen of the United States, residing at the city of St. Louis, State of Missouri, have invented a certain :new and useful Improvement in Flexible Shaft-Couplings, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the` same, reference being had-to the accompany# part Of this specifica- Figure l is a side elevational View of my improved shaft-coupling, and Fig. 2 is an edge elevational view.

This invention relates to a new and useful improvement in liexible shaft-couplings, the Object being to simplify the construction of devices of the character described and atthe` fment; but a variation fromthis position is permittedby my improved coupling without destroying the positive connection between the two shafts. On the ends of the driving and driven shafts are fixed hubs 3, which are provided with radial arms 4, forming spiders, there being three spider-arms shown in the drawings' extending from each hub. The

, outer ends of these spider-arms are perforated for the reception of bolts or other attaching devices V5, by which the arms are secured to a Hexible disk 6, at which point said arms are each provided with lateral projections 4a, which project from 'the arms to contact with the ldiskfi, thereby holding it rmly in position between but free from contact with the arms 4, whereby greater torsional play of the ends of the shaftsd 2 is permitted than if i said spider-arms were of a continuous straight line on their inner faces and abutted against said disk for their entire length. This disk points.

attachment being sixty degrees apart.

is preferably made of leather; but there. are

of the driven shafts are circumferentially displaced with respect to each other, so that they are connected to the flexible disk at alternate Where there are six arms (three on each shaft) said arms are preferably arranged equidistantly around the disk, their points of It A'will be understood, however, that two arms could be employed on each shaft or more than three arms.

From the above it will be noted that should either of the shafts be deiiected from a straight line the flexible disk will yield to accommo-v date such movement without destroying the `direct positive connection between the shafts and also that the shafts or either of them may Vbe slightly displaced longitudinally without destroying the efficiency of the coupling.

I am aware that many minor changes in the construction, arrangement, and combination of the several parts of my device can be made and substituted for thoseherein shown and described without in the least departing from the nature and principle of my invention.

Having thus described my invention, what ts The spider-arms of the driving and" i Iclaim as new, and desire to secure by Letters Patent, is-

Ina shaft-coupling, the combination of a driving and driven shaft, a collar on each of said shafts, there being integral radial arms projecting from each of said collars and in-A tegral'perforated lateral extensions on said radial arms, an interposed flexible disk secured between the inner ends of said radial arms and of sulicient diameter to extend beyond the ends thereof, said disk having perforations registering with the perforations in all of said radial arms, and bolts passing through said disk and said perforated extensions and thereby connecting the said disk to all of the said radial arms; substantially as described.,

`In testimony whereof I hereunto aflix my signature, in the presence of ftwo witnesses, this 24th day of February, 1902.

ADOLPH PETELER.l

Witnesses:

Y GEORGE BAKEWELL, G. A. PENNINGTON.

IOO 

